Development and Fielding of the Excalibur XM982 Warhead 43 rd Annual Armament Systems: Guns & Missile Systems Conference & Exhibition April 21 24, 2008 New Orleans, LA
Excalibur Team Prime Contractor: Raytheon BAE Systems Bofors GD-OTS PM-CAS 2
XM982 Excalibur GPS-Guided, Precision Long-Range Artillery Projectile Accuracy of Less Than 10M CEP Minimizes Collateral Damage Employment Flexibility - Danger Close - Restrictive Environment - Limits House Clearing - Off-Axis Capable Maneuvering Airframe High Impact Angle - Ideal For Urban Terrain - Optimal Effects Increased Effects With Fewer Rounds Responsive & Available to the Close- Combat Soldiers/Marines M109A6 Paladin US Army M777A2 LW155 US Army USMC Archer Excalibur is is Transforming Cannon Artillery on on the the Battlefield Today Today 3
Precision Cannon Munition Capability System Initialization Deploy Canards near Apogee (Ballistic prior to Apogee) Mission Planning Concept Gun Target Location Trajectory Information GPS Crypto Keys Precise Time Fuze Setting Power Latitude / Longitude / Altitude Value to Warfighter GPS Acquisition and Track Structure Top Attack (Detonation after Penetration) Allows for destruction of high-payoff targets in urban and complex terrain Minimizes collateral damage; reduces risk to friendly forces in the close fight Responsive; organic to UA & Stryker BCT All weather capability Fully autonomous; no laser required Precision Delivery Regardless of Range Limits Collateral Damage Decreases Volume of Fire Per Engagement Enhances Soldier Survivability Fragmenting Warhead Near-vertical Impact for Max Lethality Top Attack, 3 Fuzing Modes: -Height of Burst -Point Detonating -Delay/Penetration Sensors: M707 Knight w/fs3 Stryker FSV w/fs3 M7 & M2A3 BFIST Shadow PIP TUAV *Accuracy (CEP) *Effectiveness *Reliability *Interoperability Range Concrete Penetration ** Anti-Jam System Description Precision guided, extended range 155mm High Explosive cannon ammunition All weather, day/night, fire & forget capability, optimized for urban/complex terrain GPS-Inertial Navigation System guidance w/anti-jam technology <10 meter CEP Accuracy at all Ranges Lethality comparable to M107 HE Block Ia-1: Early Fielding User s Expected Minimum Performance Capability =20 Meter =6 Meter =M107 HE = 60% All critical toplevel IERs =30 =24 km 4 No =M107 HE = 74% All critical toplevel IERs =24 30 km = 4 Yes ORD Requirements Block Ia-2 Threshold =20 Meter =M107 HE = 85% All critical toplevel IERs =30 km All top-level IERs * Key Performance Parameter ** Block Ia-1 Configuration will have Anti-Jam electronics, but will only have limited testing prior to Fielding 4 =30 Meter Block Ia-2 Objective =10 Meter =M107 HE = 96% =40 35 km 8 =20 Meter 4
Major Components & Functions GPS Receiver Inertial Measurement Unit IMU Canard Actuation System - CAS Height of Burst, Point Detonating & Delay Sensors Internal Fuze Safe & Arm Unitary Warhead Spinning Base System & Data Hold Batteries GPS SAASM (Selective Availability-Anti Spoofing Module) GPS Antennas Base Bleed EPIAFS - Enhanced Portable Inductive Artillery Fuze Setter 5
Effectiveness Against Unitary Targets Effects Effects Comparison: Comparison: M107 M107 at at 15Km 15Km M549 M549 at at 20Km 20Km Excalibur Excalibur at at any any range range Infantry Platoon M549: 25 rounds M107: 43 rounds Excalibur: 3 rounds Command Post M549: 54 rounds M107: 78 rounds Excalibur: 6 rounds Radar M549: 10 rounds M107: 11 rounds Excalibur: 1 round Structures M549: 147 rounds M107: 110 rounds Excalibur: 3 rounds Excalibur is is used in in a complex target environment! 6
Gun Compatibility and Range with Base Bleed Current US 39-caliber systems (M777, M109A6, M198) 40km MACS-5 NLOS-C US Army >36km MACS-4 FH77BD* Swedish Army 50km Swedish Uni-Flex * 52 Caliber Howitzers Will Achieve the 50km Range Charge M777 Joint Light Weight Howitzer (LW155) FH77BD Archer M198 Towed Howitzer M109A6 Paladin Howitzer and M992A2 FAASV M198 Towed Howitzer Non-Line-of-Sight Cannon (NLOS-C) 7
Design Challenges Strict IM requirements Gun Hardening Concrete Penetration Evolving Requirements (System Level Trades) Long Storage Life 8
Warhead Development SDD Program Trade Studies Explosive Material (Gun Safety, Reliability, IM, and Lethality) Protection of Fuze (Gun Launch and Penetration) IM Liner and Vent Material Study Analysis Finite Element Analysis Hydrocode (Concrete Penetration, BI, FI, and SD) Weapon Effectiveness Testing Insensitive Munitions JMEM Arena Testing Concrete Penetration Testing Proof Load Gun Testing Environmental Testing Early Fielding to Fulfill Need for Precision Fire Support (Approx. 800 Warheads Delivered) 9
Warhead Overview Damping Material IM Liner Booster Cup Fuzewell Fuze Liner Front Retainer Fuze Fuze Retainer Plate FRONT Main Charge Explosive (PBXN-9) Booster (PBXN-9) IM Vents Spacer Spin Sensor Cavity 10
Modeling & Simulation Target Penetration CAS Correlation of Modeling & Test Results Impact velocity = 328 m/s (1,076 ft/s) Angle of obliquity = 0 deg Angle of attack = 0 deg Concrete Comp. strength = 4,200 psi Exit Velocity (Simulation) = 278 m/s Exit Velocity (Test) = 276 m/s IMU coupling IMU plate UW Nose and front retainer 11
Modeling & Simulation Sympathetic Detonation Sympathetic Detonation Test Prediction: No Detonation of Acceptors Test Results: Type III (Explosion) OTI*HULL Hydrocode Results 12
XM982 Warhead Performance Performance Measure Requirement Result Environmental: Gun Launch PMP + 5% Meets Requirements Environmental: Hot Gun Functional After Exposure Meets Requirements Environmental: Life Cycle 20 years Meets Requirements IM: Bullet Impact Type V Type V IM: Fast Cook-Off Type V Type V IM: Fragment Impact Type V Type V IM: Slow Cook-Off Type V (Objective) Type II (Threshold) Type III IM: Sympathetic Detonation Type II Type III Performance: Lethality Personnel, Command Post, Air Defense Radar Meets Requirements Performance: Penetration 8" Reinforced Concrete Exceeds Requirements Reliability: Initial 0.9991 0.9998 Reliability: Long Term 0.9990 0.9993 13
Performance Test Results Static JMEM Arena Test Full Scale Penetration Test (Target Exit) Live Fire Test Lethality Objectives Achieved 14
Insensitive Munitions Testing Bullet Impact Test (Type V Reaction) FI Test (Type V Reaction) Fast Cook-Off Test FCO Test (Type V Reaction) SCO Test (Type III) SD Test (Type III) FI Test (Type V Reaction) 15
Acknowledgements Raytheon Missile Systems Larry Wasielewski BAE Systems Bofors Pär Eriksson 16